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Grids in FermionOperator

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Peter Boyle
2026-09-03 23:18:06 -04:00
parent 953a401366
commit a28f7ad531
4 changed files with 18 additions and 16 deletions
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Grid/qcd/action/fermion/ContinuedFractionFermion5D.h
+1 -2
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@@ -66,8 +66,7 @@ public:
FermionField in_k(in.Grid());
FermionField prop_k(in.Grid());
GRID_ASSERT(in.Grid() == this->FermionGrid());
PlannedFFT<typename FermionField::vector_object> &theFFT = this->FermionGridFFT();
PlannedFFT<typename FermionField::vector_object> &theFFT = this->ThePlannedFFT(in.Grid());
//phase for boundary condition
ComplexField coor(in.Grid());
Grid/qcd/action/fermion/DomainWallFermion.h
+1 -2
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@@ -45,8 +45,7 @@ public:
FermionField in_k(in.Grid());
FermionField prop_k(in.Grid());
GRID_ASSERT(in.Grid() == this->FermionGrid());
PlannedFFT<typename FermionField::vector_object> &theFFT = this->FermionGridFFT();
PlannedFFT<typename FermionField::vector_object> &theFFT = this->ThePlannedFFT(in.Grid());
//phase for boundary condition
ComplexField coor(in.Grid());
Grid/qcd/action/fermion/FermionOperator.h
+15 -10
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@@ -45,7 +45,7 @@ public:
INHERIT_IMPL_TYPES(Impl);
FermionOperator(const ImplParams &p= ImplParams()) : Impl(p) {};
virtual ~FermionOperator(void) { if ( _fermionGridFFT ) delete _fermionGridFFT; }
virtual ~FermionOperator(void) { if ( _thePlannedFFT ) delete _thePlannedFFT; }
virtual FermionField &tmp(void) = 0;
@@ -96,22 +96,27 @@ public:
virtual void MomentumSpacePropagator(FermionField &out,const FermionField &in,RealD _m,std::vector<double> twist) { GRID_ASSERT(0);};
protected:
// Cached planned FFT on the fermion grid -- a general utility (FreePropagator
// Cached planned FFT for the ACTIVE field grid -- a general utility (FreePropagator
// today; smoother, smearings and other users anticipated). Frontier FFTW plan
// create+destroy is ~22 ms/call (measured, Test_fft_prop PLANCOST) -- ~4x the
// transform itself and ~80% of an unplanned call -- so a per-call `FFT theFFT(grid)`
// dominates. Lazily built once on FermionGrid() and reused; owned, deleted in the dtor.
PlannedFFT<typename FermionField::vector_object> *_fermionGridFFT{nullptr};
PlannedFFT<typename FermionField::vector_object> & FermionGridFFT(void) {
if ( _fermionGridFFT == nullptr )
_fermionGridFFT = new PlannedFFT<typename FermionField::vector_object>((GridCartesian *)this->FermionGrid());
return *_fermionGridFFT;
// dominates. We cache BOTH the FFT and the grid it was built on; when called with a
// different grid (e.g. the 5D propagator vs the 4D physical propagator) we rebuild.
// Lazily built, owned, deleted in the dtor. Raw pointer, no smart pointers.
PlannedFFT<typename FermionField::vector_object> *_thePlannedFFT{nullptr};
GridBase *_thePlannedFFTGrid{nullptr};
PlannedFFT<typename FermionField::vector_object> & ThePlannedFFT(GridBase *grid) {
if ( _thePlannedFFT == nullptr || _thePlannedFFTGrid != grid ) {
if ( _thePlannedFFT != nullptr ) delete _thePlannedFFT; // active grid changed: rebuild
_thePlannedFFT = new PlannedFFT<typename FermionField::vector_object>((GridCartesian *)grid);
_thePlannedFFTGrid = grid;
}
return *_thePlannedFFT;
}
public:
virtual void FreePropagator(const FermionField &in,FermionField &out,RealD mass,std::vector<Complex> boundary,std::vector<double> twist)
{
GRID_ASSERT(in.Grid() == this->FermionGrid());
PlannedFFT<typename FermionField::vector_object> &theFFT = this->FermionGridFFT();
PlannedFFT<typename FermionField::vector_object> &theFFT = this->ThePlannedFFT(in.Grid());
typedef typename Simd::scalar_type Scalar;
Grid/qcd/action/fermion/PartialFractionFermion5D.h
+1 -2
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@@ -96,8 +96,7 @@ public:
FermionField in_k(in.Grid());
FermionField prop_k(in.Grid());
GRID_ASSERT(in.Grid() == this->FermionGrid());
PlannedFFT<typename FermionField::vector_object> &theFFT = this->FermionGridFFT();
PlannedFFT<typename FermionField::vector_object> &theFFT = this->ThePlannedFFT(in.Grid());
//phase for boundary condition
ComplexField coor(in.Grid());